Finding the Fourth Proportional to 515,747.20, 773,620.80 and 403,772.80
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Solution
The fourth proportional to 515,747.20, 773,620.80 and 403,772.80 is: 605,659.20
Step by Step Solution
- Step 1: Write the proportion equation
515,747.20 : 773,620.80 = 403,772.80 : x - Step 2: Convert to fraction form
515,747.20/773,620.80 = 403,772.80/x - Step 3: Cross multiply
515,747.20x = 773,620.80 × 403,772.80 - Step 4: Simplify right side
515,747.20x = 312,367,036,554.24 - Step 5: Solve for x
x = 312,367,036,554.24/515,747.20 - Step 6: Final answer
x = 605,659.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.